z3DTuneTheMelody app for iPhone and iPad

The default scale is a middle C octave divided into 96 tones. Tap on any of the tones to hear them.
The subscript on the note name indicates the partial tone change from the whole tone:
+1(up a sixth tone), +2(up a fourth tone), +3(up a third tone),
-1(down a sixth tone), -2(down a fourth tone), -3(down a third tone), -4(down a half tone)
Tap on a tone will cease all the prior ones before playing the tone.
Moving to the next tone within the same tap will sound the tone while allowing the prior tones to carry over until they fade naturally after 6 secs.
Tap on Bend Scale Down to lower the entire scale by one tone at a time.
Tap on Bend Scale Up to raise the entire scale by one tone at a time.
Tap Remove Note to Green then tap on any scale notes to remove them.
Tap Restore Note to Green, tap on any blank scale notes to restore them.
Removing and restoring scale notes does the same to any of that scale note in the melody and harmony notes.
Tap on Show Flats or Show Sharps to toggle tone alpha names between them.
Tap on the other buttons to toggle them on or off (Green is on, Blue is off).
The buttons specific to note details only toggle on when there is a melody note selected.
When a melody note is selected it will display its details (scale note, alpha name, velocity, duration, harmony notes) in the note detail area.
The note detail area gives you 5 slots in each of 5 octaves to add harmony notes to your melody note, each with velocity.
Tap Remove Note to Green, tap on melody or harmony notes to remove them. Note info is remains but it will not play.
Tap Restore Note to Green, tap on melody notes to restore them. The notes will stay removed if its scale note is still removed.
Tap 0 - Softer to Green, tap on note or its velocity in the detail area to lower tone velocity.
Tap Louder - 127 to Green, tap on note or its velocity in the detail area to raise tone velocity.
Tap on - to decrease tone secs by .001. Tap -- to decrease secs faster
Tap on + to increase tone secs by .001. Tap ++ to increase sea faster.
Tap on Cease note after Secs to toggle to Leave Open After Secs and vice versa.
When the seconds are up, Cease will immediately shut the note, Open will let it fade naturally.
Tap Note Down to Green, tap on melody or harmony notes to lower the scale note.
Tap Note Up to Green, tap on melody or harmony notes to raise the scale note.
When Note Up or Down is Green, tapping on a note in the melody line will change both melody and harmony notes by one scale note.
When Note Up or down is Green, tapping on the note in note detail area will raise or lower only that one note. 
The main melody note on the far left will cycle thru all 5 octaves.
The harmony notes will cycle thru all the scale notes but stay within their designated octave. Blank harmony notes will get a scale note.
Play Melody will use duration and velocity to play the tones in sequence - a shut tone will cease after the seconds elapse, an open tone will continue to ring until it fades after 6 secs.
Stop Melody will stop the playing of the melody.
Tap on plus or minus to adjust the play melody speed pct before tapping on play melody
Create New Project will put a new 96 tone scale and melody into Project0.
Create New Melody will create a new melody with only the current scale notes.
Project 0 always holds the most recent current working project.
You can save the current working project into any of the available slots - Project 1 thru 9 by changing the save project number then tap on save
You can open any available of Project 1 thru 9 into the current working project by changing the open project number then tap on open
Tap on Switch Picture to change the background picture
Availability Policy - NO Internet Connection Required.
Exclusivity Policy - Landscape iPad Mode
Fun Policy - Unlimited Fun For A One Time Price
Peace of Mind Policy - NO Ads.
Privacy Policy - NO Data Collected From You.
Recommendation - Use the Apple Pencil for iPad